For lack of a better place to stick this info at the moment, I'm going to post this little diy here. Maybe I'll start a little thread for it because I can't be the only one suffering with this super annoying problem, can I?
I've had years of problems with my digital timers. Maybe it's just the brand of the ONLY ones that are available locally, which are made by 'Woods'. Curse you, Woods! I've been through several of their timers and they all have had the same issue. I don't know if other brands have this same quirk.
I've been reducing the 'on' hours of the two lights in the flowering room for the sake of the sativas, by 15 minutes at a time, and may go as low as 10/14 before they're finished. However, it seems like whenever I reprogram a setting on one of these stupid things, their state of the art circuitry cannot handle the change. What typically happens is either they do not come on at the designated 'on' time, and stay off, or much more commonly, come on and stay on -till I figure it out. Figuring it out isn't as easy as you might think!
In order to get in to my flowering room I have to go through the veg room. This generally means I can only go in there when the flowering room lights are meant to be on, or I'll be screwing up the light cycle. Sometimes because of scheduling I have to go in anyway, and in that case I'll shut all the veg lights off and use a green led headlamp to work.
Usually it takes me a few days to figure out, to my horror, that the timers are messed up and the lights aren't working right. I have had no way of knowing what's going on in the flowering room without going in there. A couple times I've been in the veg room and heard the heat vent fan going when lights were supposed to be off, and got suspicious. Other times I've clued in because the pots were drying up faster than usual.
I've gotten to the point of realizing that every time I reprogram a timer, I have to unplug it, remove the little battery in the back to reset it completely, and reprogram everything from scratch. This is the only sure way to know that the thing isn't going to get 'confused'. This also has its hazards if I make a mistake when reprogramming all the info.
Tonight I rigged up extension cords that run off of those flowering light timers, one for each light- A and B. They run through the walls into the veg room and have indicator night lights plugged into the end of each one. These lights will go on and off with the timers and should tell me what's happening with the lights. I should have done this years ago.
I hate you Woods.